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Ijūin, Japan
Full City Profile
4.1
/5.0
A
Great
25,217
Population
80/sq mi density
305 ft
Elevation
93 meters
62°F
Avg Temperature
16°C
A
Overall
4.1 / 5.0
Strong
B
Economy
3.1 / 5.0
$26,600 median income, 2.6% unemployment
A+
Affordability
5.0 / 5.0
$64,000 home value, $320/mo rent
Ijūin enjoys a temperate climate with an average annual temperature of 62°F (17°C). Winters average 43°F in January while summers reach 79°F in July. The area gets 179 sunny days per year. Annual precipitation totals 90.8 inches. The area receives 0.0 inches of snow annually.
Temperature
43°F Jan (6°C)
79°F Jul (26°C)
| Annual Average | 61.6°F |
| 14% above US avg | |
| January Average | 43°F (6°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 179 days/yr |
Geography
| Elevation | 305 ft (93 m) |
| Area | 316.1 sq mi (818.7 km²) |
| Population Density | 80/sq mi |
| Coordinates | 31.6167°N, 130.4000°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Tsunami History
17 tsunamis recorded within 500 km. Highest wave on record: 55.0 m (180 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1792 | SHIMABARA BAY, KYUSHU ISLAND | Landslide | 55.0 m | 15,000 | 126 km |
| 1780 | SW. KYUSHU ISLAND | Astronomical | 6.0 m | - | 29 km |
| 1914 | SEIKAIDO | Eruption | 3.0 m | 63 | 26 km |
| 1961 | SEIKAIDO | Earthquake | 0.7 m | 2 | 133 km |
| 1996 | KYUSHU ISLAND | Earthquake | 0.6 m | - | 105 km |
| 2024 | HYUGANADA SEA | Earthquake | 0.5 m | - | 107 km |
| 1970 | SEIKAIDO | Earthquake | 0.3 m | - | 139 km |
| 2025 | HYUGANADA SEA | Earthquake | 0.2 m | - | 112 km |
| 1996 | SEA OF JAPAN | Earthquake | 0.2 m | - | 89 km |
| 1996 | KYUSHU ISLAND | Earthquake | 0.2 m | - | 134 km |
| 1987 | KYUSHU ISLAND | Earthquake | 0.0 m | 2 | 144 km |
| 1828 | AMAKUSA SEA | Earthquake | - | - | 119 km |
| 1781 | SW. KYUSHU ISLAND | Astronomical | - | 38 | 26 km |
| 1780 | SW. KYUSHU ISLAND | Astronomical | - | - | 29 km |
| 1619 | YATSUSHIRO, JAPAN | Earthquake | - | - | 100 km |
| 766 | N. KAGOSHIMA BAY | Astronomical | - | - | 29 km |
| 744 | SW. KYUSHU ISLAND | Earthquake | - | 1,520 | 88 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
11 volcanoes within 200 km. Closest: Aira (25 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Aira | Caldera | 1,117 m (3,665 ft) | 2020 | 25 km |
| Yonemaru-Sumiyoshiike | Maar(s) | 40 m (131 ft) | -6200 | 25 km |
| Ata | Caldera(s) | 924 m (3,031 ft) | 885 | 47 km |
| Kirishimayama | Shield | 1,700 m (5,577 ft) | 2018 | 56 km |
| Kikai | Caldera | 704 m (2,310 ft) | 2020 | 92 km |
| Unzendake | Complex | 1,483 m (4,865 ft) | 1996 | 128 km |
| Kuchinoerabujima | Stratovolcano(es) | 657 m (2,156 ft) | 2020 | 132 km |
| Asosan | Caldera | 1,592 m (5,223 ft) | 2020 | 156 km |
| Kujusan | Stratovolcano(es) | 1,791 m (5,876 ft) | 1996 | 182 km |
| Fukue | Shield(s) | 315 m (1,033 ft) | -400 | 186 km |
| Kuchinoshima | Stratovolcano(es) | 628 m (2,060 ft) | 1190 | 189 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 43°F (6°C) | 3.5 in | Coldest |
| February | 45°F (7°C) | 4.3 in | |
| March | 51°F (10°C) | 6.4 in | |
| April | 59°F (15°C) | 8.7 in | |
| May | 66°F (19°C) | 9.7 in | |
| June | 72°F (22°C) | 16.7 in | Wettest |
| July | 79°F (26°C) | 12.9 in | |
| August | 80°F (27°C) | 8.9 in | Warmest |
| September | 75°F (24°C) | 8.5 in | |
| October | 66°F (19°C) | 4.4 in | |
| November | 56°F (14°C) | 3.6 in | |
| December | 47°F (8°C) | 3.2 in | Driest |
Ijūin has a seasonal temperature swing of 37°F / from 43°F in January to 80°F in August. Total annual precipitation is 90.8 inches, with June being the wettest month (16.7") and December the driest (3.2").